i can tell you the removal takes 5 minutes. 2 to pull the trim piece, 30 on each of the Xmm screws holing it in. 4 harnesses int he rear take less than a minute to sidconnect. i did mine to see if my shark fin was messing up sirius, turned out to be an internal sirius turner and is beeing replaced

If you are getting the RBZ from a 2011 it should be completely plug and play and an easy DIY. I just did the same upgrade with factory Uconnect and Sirius, all systems worked after replacing the head unit with no further coding or changes. My phone even stay paired, since it must pair with the uconnect module and not the head unit. You will potentially loose the free sirius, since it follows the radio and not the owner, but if the RBZ has any free sirius left, you can use that until it expires.

To remove the trim panel I started from the bottom, partially opening the storage compartment, and lift the bottom of the trim piece forward from inside the compartment. Then just run your fingers up along each edge to release the clips. The ones near the top took the most force, just go slowly. I didn't have to use a tool, prying with a metal object will most likely damage the trim. If you feel you need a tool, go get a plastic panel removal, but I really think fingers are the best tool here.